Primobolan is a well-known and popular steroid as well. Like nandrolone it's most often used as a base compound for stacking with other steroids. Methenolone however, is a DHT-based steroid (actually, DHB or dihydroboldenone, the 5-alpha reduced of the milder boldenon). Meaning when it interacts with the aromatase enzyme it does not form estrogens at all. That makes it ideal for use when cutting when excess estrogen is best avoided because of its retentive effects on water and fat. Methenolone is mostly only used in such instances, or by people who are very succeptible to estrogenic side-effects, because the anabolic activity of methenolone is slightly lower than that of nandrolone, quite likely BECAUSE it is non-estrogenic.

Like nandrolone, methenolone is very mild on the system. Probably the reason why both are strongly favored as base compounds in stacks. Methenolone has no estrogenic side-effects whatsoever, on account of its structure. Its effects on the cholesterol levels are barely noticeable. In doses of 200 mg or less (injectable) blood pressure is rarely, if at all, altered. As for hepatoxicity, long-term use will of course increase liver values but gradually and only slightly. The injections of course, since they only pass the liver once, have roughly half the liver-toxic effects of the tabs. The low liver-toxicity is accounted for that the bio-availability of methenolone is carried by a 1-methyl-group, which lessens the need for a carrier attachment such as a 17-alpha-akylated group, the main culprit in steroid-related liver afflictions.

Methenolone is available as an injection or as an oral. The injection is naturally regarded as better. Its an enanthate ester which is quite long-acting and only needs to be injected once a week in doses of 300-600 mg. Because it by-passes hepatic breakdown on the first pass, it also has a higher survival rate. The orals are a lot less handy, but often preferred by bodybuilders who are afraid of needles or who are already taking one or more injectable compounds. The tabs are in a short-lived acetate form, meaning that doses of 100-150 mg per day are needed, split over 2 or 3 doses, making the tabs quite inconvenient for use. The reason doses need to be split up, unlike most oral steroids, is because Methenolone is not 17-alpha-alkylated, but 1-methylated for oral bio-availability. This reduces the liver stress, but also the availability, hence the multiple and high doses needed daily.